Sectional bookcase.



G. J. LUNDSTROM.

SECTIONAL BOOKCASE.

APPLIOATION FILED 11011.17. 1911. RENEWED 11m: 3,1914.

1,1 16,304. Patented Nov. 3, 1914.

UNITED sTATEs PATENT orrron.

ARL J. LUNIDSTROM, or LITTLE FALLs, NEW YORK.

SECTION AL BOOKCASE.

'To all whom it may concern Be it known that I, CARL J. LUNDsTRoM, a subject of the King of Sweden, residing at Little Falls, in the county of Herkimer and Stateof New York, have invented certain new and useful Improvements in Sectional Bookcases, of which the following is a specification. r i

This invention relates to sectional bookcases.

One object is to provide a sectional bookcase which may be readily folded for trans portation or storage purposes and embodying in addition to this feature and other characteristics means whereby units may be added to the cases and substantially supported in superimposed relation with the shelves so mounted that a slight saggingof the shelves may be permitted without undue strain on the sides or other parts of the case.

With the above and other objects in view, the invention consists in the construction and novel combination of parts hereinafter more fully described, illustrated in the accompanying drawings and pointed out in the claims hereto appended; it being understood thatvarious changes inthe form, proportion, size and minor details of construction, may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

In the drawings: Figure 1 is a perspective View of two sections set up. i Fig. 2 is a fragmentary view showing. details of construction. Fig. 3 is a fragmentary view showing how the shelf may sag without effecting disconnectionof the sides. Fig. 4 is a detail perspective view of one of the corner irons. Referring now more particularly to the accompanying drawings, the reference character 1 indicates the sides of a section, 2 the shelves, and 3 the backs of the sections. Each side has at its lower edge a notch 4 and also has on its lower edge' from the notch 1 to its rear edge,a tongue 5, so that the lower edge of a side may have its tongue 5 fitted in the groove 6 at the top of the corresponding side and have its notch l fit over the shoulder 7 at the upper forward edge of each side whereby displacement of an upper side with a superimposed lower side cannot take place either laterally or forwardly, this tongue and groove connection being reinforced to perform these functions by means of a lug 8 adapted to fit in a groove 9 in the upper edge of each side.

Specification of Letters Patent. Application filed Novemberl'i, 1911, Serial No. 660,830. Renewed June-.3, 1914.

Serial No. 842,793.

Patented Nov. 3, 1914. p

Each shelf 2 at eachof its corners has secured to it a sup ortlng lI'OIl member A. 1

Each 1 corner iron 1 I includes a body portion 10 which is adapted to be fitted against the upstanding wings 11 and These corner llOllS are first secured to the inner face ofthe corresponding side by means of a screw ends of each corner 11011 are separated as in- .CllCittQCl at 17 so as to permlt the shelves to sag without exerting any pull or strain on the fastening 13 which secures the corner irons to the sides.

The corner irons are elastic and this permits slight sagging or movement of the shelves and relieves substantially all strain on the fastenings 13. To further relieve strain on the fastenings these corner irons to the adapted to fit in the corresponding groove 1}) formed along the lower inner face of each side member. Each shelf 2 .18 provided with an upper groove 20 and with a lower groove.

21, both grooves being adapted to receive the lower and upper edges ofupper and lower backs, respectively. Secured to the inner side at opposite ends adjacent the upper edges of each back 3 by means of a screwor other suitable fastening :22 is an angle iron 23 whose inner end is provided with a lug adapted to fit in the corresponding groove 2% formed in the inner side of the back and by virtue of which, swinging of the angle iron 23 on the securing means vented. The outer end of each angle iron 23 is off-set and formed into atongue 25 adapted to fit in the groove 26 formed one in each side at the top thereof whereby the backs 3 have proper fitin the grooves 20 at 'therear edges of the shelves 2. The ends of each shelf 2 are preferably rounded so as to permit the sides of the sections to be readily folded down upon the shelves.

From the foregoing, it will be seen that eachunit may be readily collapsed and that each shelf may sag at either end without effecting unnecessary strain on the sides and without in any way interfering with the po- 1 13 which connect sides, the wing 12 of each corner iron is preferably provided with a horizontal off-set or lug 18 which is 22 is pre lower face of the shelf and provided with sition of one side with relation to an adjacent side in the building up of superim posed units.

What is claimed is 1. A bookcase section comprising side s and ashelf, each side on its inner face having a groove, corner irons secured to each shelf and also to the inner face of each side, the corner irons embodying a body portion and separated wings with one wing of each corner iron provided with a lug adapted to fit in the groove of the corresponding side.

2. A bookcase section comprising sides and a. shelf, each side on its inner face having a groove, corner irons each having separated wings, means for securing one wing of each corner iron to the corresponding side, and means for swingingly connecting the other wing of each corner iron to the shelf, the wings which are secured to the sides having lugs fitting in the grooves of the corresponding sides so that slight sagging of the shelf is permitted without undue strain on the means which secures the corner irons to the sides and permitting swingingof the sides onto the shelf.

3. A bookcase section comprising sides and a shelf, corner irons for the corners of the shelf, each corner iron embodying a body portion secured to the under side of the shelf and also including upstanding separated wings arranged at a right angle to each other with one of the separated Wings secured to the adjacent edge of the shelf and with the other separated wing se-V cured to the inner face of the adjacent side of the section, the separated wings permitting slight sagging of the shelf without undue strain on the means which secures the corner irons to the sides and shelf.

4:. A bookcase comprising superimposed sections each section including a shelf, sides and a back, each side having a horizontal shoulder along its upper edge which terminates short of the front edge of the side forming a vertical shoulder, each side also having a vertical groove near its rear edge. below said horizontal shoulders, each back having a vertical groove adjacent each end, and a bracket secured to each back adjacent each end thereof and at one end projecting into the corresponding vertical groove of the back and at the opposite end projecting into the vertical groove of each side having a notch and a tongue, the notch of an upper side engaging the vertical shoulder of the side therebeneath with the tongue of the upper side engaging the corresponding horizontal shoulders of the sides therebeneath.

5. A bookcase section comprising sides each having a horizontal groove in itsinher face at its lower portion, a shelf having its ends rounded, angle irons'each including separated wings, means for securing one of the wings of each corner iron to the corresponding side, means for securingthe other wing of each corner iron to the shelf, the first named wing having a lug fitting in the horizontal groove of the corresponding side, the corner irons permitting movement of one wing of a corner iron away from the to permit sagging of the shelf, the corner irons also permitting folding of the sides onto the shelves, and a back having connection with the shelf and the sides.

6. A bookcase comprising superimposed sections each section including a shelf, sides and a back, each side having a'horizo-ntal shoulder along its upper edge which terminates short of thefront edge of the side forming a vertical shoulder, each side also having a. vertical groove near its rear edge below said horizontal shoulders, each back having a vertical groove adjacent each end, and a. bracket secured to each back adjacent each end thereof and at one end projecting into the corresponding vertical groove of the back and at the opposite end projecting into the vertical groove of the corresponding side, the lower edge of each side having a notch and a tongue, the notch of an upper side engaging the vertical shoulder of the side therebeneath with the tongue of the upper side engaging the corresponding horizontal shoulders of the sides therebeneath and closing the ends of the vertical grooves of the sides, the sides having other grooves pr jections carried by the lower edges of the sides to lit in said other grooves of the sides therebeneath.

In testimony whereof I aflix my signature in presence of two witnesses.

CARL J. LUNDSTROM.

Witnesses R. O. HORWALD,

the corresponding side, the lower edge of Copies of this patent may be obtained for A. B. LADEAU.

five cents each, by addressing the Commissioner of'Patents,

Washington, I). C.

companion wing of the corner iron so as 7 

